Iris Melanoma

**Semantic type:** Neoplastic Process

**Definition:** A uveal melanoma that arises from the iris. It is the most common primary malignant neoplasm of the iris. The majority of cases arise from preexisting nevi.

**Synonyms:** - Iris Malignant Melanoma - Malignant Melanoma of Iris - Malignant Melanoma of the Iris - Melanoma of Iris - Melanoma of the Iris